Preliminary
RT9166/A
300/500mA, Ultra-Fast Transient Response LDO Regulator
General Description
The RT9166/A series are CMOS low dropout
regulators optimized for ultra-fast transient response.
The devices are capable of supplying 300mA or 500mA
of output current with a dropout voltage of 230mV or
430mV respectively.
The RT9166/A鈥檚 performance is optimized for
CD/DVD-ROM, CD/RW or wireless communication
supply applications. The RT9166/A regulators are
stable with output capacitors as low as 1碌F. The other
features include ultra low dropout voltage, high output
accuracy, current limiting protection, and high ripple
rejection ratio.
The devices are available in fixed output voltages
range of 1.2V to 4.5V with 0.1V per step. The
RT9166/A regulators are available in 3-lead SOT-23,
SOT-89, SOT-223 and TO-92 packages.
Features
Low Quiescent Current (Typically 220碌A(chǔ))
Guaranteed 300/500mA Output Current
Low Dropout Voltage: 230/430mV at 300/500mA
Wide Operating Voltage Ranges: 3V~5.5V
Ultra-Fast Transient Response
Tight Load and Line Regulation
Current Limiting Protection
Thermal Shutdown Protection
Only low-ESR Ceramic Capacitor Required for
Stability
Custom Voltage Available
Applications
CD/DVD-ROM, CD/RW
Wireless LAN Card/Keyboard/Mouse
Battery-Powered Equipment
XDSL Router
PCMCIA Card
Ordering Information
RT9166/A-
Package Type
VL : SOT-23
X : SOT-89
XL : SOT-89 L type
G : SOT-223
GL : SOT-223 L type
Z : TO-92
Operating Temperature Range
C: Commercial Standard
Output Voltage
12 : 1.2V
13 : 1.3V
:
45 : 4.5V
500mA Output Current
300mA Output Current
Marking Information
For marking information, contact our sales
representative directly or through a RichTek
distributor located in your area, otherwise visit our
website for detail.
DS9166A-03 July 2003
www.richtek.com
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